Environment & Science

Despite A Ban, Arkansas Farmers Are Still Spraying Controversial Weedkiller

These soybeans were damaged in 2017 by dicamba, a popular weedkiller that's prone to drifting into neighboring fields. Some farmers in the state are defying efforts by regulators to strictly limit use of the chemical.
Dan Charles/NPR

The fields and back roads of eastern Arkansas were a crime scene this past summer. State inspectors stopped alongside fields to pick up dying weeds. They tested the liquids in farmers' pesticide sprayers. In many cases, they found evidence that farmers were using a banned pesticide. Dozens of farmers could face thousands of dollars in fines.

The roots of the confrontation go back to a farming fiasco that took place last year. That's when the company Monsanto — now owned by Bayer — rolled out a new way to kill weeds. The company had created some special new varieties of soybeans and cotton. They can tolerate a weedkiller called dicamba. Farmers could spray dicamba to kill their weeds, yet these new crops would survive. (It's a weed-killing strategy that Monsanto pioneered with "Roundup Ready" crops 20 years ago, but Roundup isn't working so well anymore. Weeds have evolved resistance to it.)

"Honestly, I don't think anybody in the whole world dreamed the dicamba could create such an issue, bring so many farmers against farmers," says Terry Fuller, a member of Arkansas' State Plant Board, which regulates pesticides.

When farmers started spraying dicamba on these new crops, the chemical didn't stay where it belonged. It drifted across the landscape. It injured millions of acres of regular crops. The problem was especially bad in Arkansas.

Farmers who sprayed dicamba loved it, but Terry Fuller and the Arkansas State Plant Board decided that the collateral damage was unacceptable. "Trespassing on your neighbor and your friend, that's not my definition of good for business," he told me last year.

So the plant board passed the most dramatic limits on dicamba in the country. They banned dicamba spraying after April 15 each year — which covers the entire growing season.

By mid-June of this year, though, it was clear that some farmers were defying the ban, especially in Mississippi County, in the northeastern corner of the state. Thousands of acres of soybeans that couldn't tolerate the weedkiller, as well as trees in people's yards, once again were showing the classic signs of dicamba damage: curled leaves and stunted growth. Terry Fuller called it "a sad situation. Really, an unbelievable situation."

Faced with a challenge to its authority, the plant board got aggressive. It didn't wait for other farmers to report cases of damage; most of the time, those complaints didn't lead to an obvious culprit. It was impossible to figure out where the dicamba fumes came from, because they can drift for a mile or more.

Instead, inspectors went looking for direct evidence of illegal spraying. They collected dying weeds that looked like they were sprayed with dicamba, and took samples from farmers' spray rigs.

In at least a couple of dozen cases, these samples tested positive for the banned chemical. Farmers are now facing investigations that could lead to fines of at least $1,000, up to a maximum of $25,000 per violation.

I talked to two farmers who are named in the plant board's investigative documents, as well as to two others who are familiar with these investigations and support the farmers' cause. They didn't want me to use their names, because they didn't want to get in more trouble with regulators.

They told me that farmers' decisions to use dicamba came down to economics. Some believe that Monsanto's dicamba-tolerant seeds will produce a bigger harvest. One farmer told me that spraying dicamba is the only way to stay in business, and paying the fine is cheaper than fighting weeds any other way.

The state's crackdown on dicamba did seem to have an effect. The number of formal complaints about damage from drifting dicamba declined sharply this year, from almost 1,000 last year to about 200 in 2018.

The fact that some farmers are determined to keep spraying dicamba, however, is putting enormous pressure on others who are farming by the rules.

One of those farmers is Tad Nowlin, who farms land in the northeast corner of Arkansas and just across the state border, in Missouri. "Personally, I don't believe in spraying dicamba, I think it's too dangerous to spray," Nowlin told me. "I mean, anybody that says otherwise is dreaming."

So he didn't plant those new dicamba-tolerant crops. He got rid of weeds with other chemicals. "I used not one drop of dicamba. So anybody who says it can't be done — it's a myth," he says.

But then he watched the leaves on his soybean plants curl up. Dicamba had blown in from somebody else's field. He doesn't know which neighbor broke the law. But describing the damage, there's intense frustration in his voice. "Do I go out and witch-hunt people, and find — I'm not doing that. But I have a legal right as a farmer to keep a crop that is not damaged by somebody else's spray," he says.

That legal right might not be enough, though. If other people insist on using dicamba, he may be forced to plant those new dicamba-tolerant soybeans, because those plants won't get injured. And if he does that, he'd be tempted to spray dicamba, too.